Advances in the Synthesis of Polysaccharides

Pogosov, Yu. L.; Rogovin, Z. A.

doi:10.1070/rc1961v030n10abeh003001

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1966

1979

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Polymerization of 1,2:5,6‐di‐O‐isopropylidene‐α‐D‐glucofuranose and 1,2‐O‐isopropylidene‐α‐D‐glucofuranose

Whistler

Seib

1966

J. Polym. Sci. A‐1 Polym. Chem.

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A new method for preparing D‐glucose polymers is described. Isopropylidene derivatives of D‐glucofuranose, particularly the 1,2‐mono‐O‐derivative, are treated with Lewis acids, such as boron trifluoride, to eliminate acetone and produce a highly branched polymer with a molecular weight of 12,700. Approximately one isopropylidene unit remains, possibly on the potential reducing end of the glucan. Up to 95% of the polymer units are D‐glucopyranoside units indicating that ring expansion occurs during the condensation.

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